CN2582790Y - Self-locking drill chuck - Google Patents
Self-locking drill chuck Download PDFInfo
- Publication number
- CN2582790Y CN2582790Y CN02255628U CN02255628U CN2582790Y CN 2582790 Y CN2582790 Y CN 2582790Y CN 02255628 U CN02255628 U CN 02255628U CN 02255628 U CN02255628 U CN 02255628U CN 2582790 Y CN2582790 Y CN 2582790Y
- Authority
- CN
- China
- Prior art keywords
- drill body
- locking
- drill
- self
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S279/00—Chucks or sockets
- Y10S279/902—Keyless type socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17615—Obliquely guided reciprocating jaws
- Y10T279/17623—Threaded sleeve and jaw
- Y10T279/17632—Conical sleeve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/32—Means to prevent jaw loosening
Abstract
The utility model relates to a self-locking drill chuck. The utility model comprises a drill body, a screw nut, clamping jaws, a front sleeve, a back sleeve, a screw nut sleeve, and a rolling body, wherein, three clamping jaws are respectively arranged inside three inclined holes which are divided equally. Screw threads for the screw nut, and screw threads for the clamping jaws inside the clamping jaws, which is installed inside the inclined holes for the drill body are form screw thread transmission. The back part of the drill body is fixedly provided with a ratchet wheel, and a disc-shaped spring is arranged between the rolling body and a force bearing table of the drill body. The front end of the drill body is provided with a key groove and an annular connecting groove. The screw nut sleeve is extended backwards to the limit position containing the clamping jaws which are retreated, and the back end surface of the limit position is provided with a drive groove and a plurality of keys. A locking elastic element and a drive elastic element are arranged on each key. A control ring is fixedly arranged inside the back sleeve. The control ring has a plurality of drive keys and a cam curved surface composed of a plurality of bulge parts and inner concave surfaces. The inner wall of the front sleeve is provided with a positioning key and a connecting pawl. The utility model has the advantages of reasonable structure, easy use, stable self-locking performance, and reliability.
Description
Technical field
The utility model relates to a kind of drilling tool clamping device, specifically a kind of self-locking clamping chuck of drill bit.
Background technology
We know, existing locking drill chuck generally is made up of drill body, jaw, screw, nut sleeve, rolling element, protheca, back cover and locking device, three jaws are installed in respectively in three five equilibrium inclined holes of drill body, screw is installed in the screw groove of drill body, the screw thread of screw and the screw thread of jaw form thread transmission, nut sleeve is fixedlyed connected with screw, and nut sleeve has protheca, drill body rear portion to be installed with the back cover outward, and protheca is connected with screw through key.The utility model relates to a kind of drilling tool clamping device, specifically a kind of self-locking clamping chuck of drill bit.When installing and using, the screwed hole at drill body rear portion is connected with the screw rod of the power transmission shaft of power equipment, drives drill body when power transmission shaft rotates, and drives three-jaw and folded instrument and rotates synchronously.During clamping tool, relatively rotate protheca and the back cover of fixedlying connected, make protheca drive screw and rotate, through the screw thread transmission of screw and jaw, the relative drill body of jaw is moved forwards or backwards in inclined hole, to reach the purpose of clamping or back off tool handle with drill body.Simultaneously, for the reliability that keeps clamping, can set up different locking devices, for example disclosed several drill chucks that locking device is arranged: PCT/CN02/00375 and PCT/CN02/00399.Though PCT/CN02/00375 is simple and practical, be mainly used in the DC electric impact drill, if be used for the AC electric impact drill, because of the rotating speed height, impulsive force is big, then the reliability of friction locking is on the low side; The PCT/CN02/0399 excellent performance, and can be used for various electric drills, but complex structure, when being used for not being on very powerful AC electric drill and the DC electric drill, use cost is higher.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, reliable operation, self-locking clamping chuck of drill bit easy to use.
The technical scheme in the invention for solving the above technical problem is: a kind of drill chuck, comprise drill body, screw, jaw, protheca, the back cover, nut sleeve, rolling element, three jaws are installed in respectively in three five equilibrium inclined holes, the screw screw thread forms the screw thread transmission with the jaw screw thread that is installed in the jaw in the drill body inclined hole, protheca is fixedlyed connected with drill body, it is characterized in that: the drill body rear portion fixedly mounts a ratchet, between rolling element and the drill body force-bearing table disk spring is installed, the drill body front end has keyway and annular link slot, nut sleeve extands rearward to driver slot and several keys on the rear end face that comprises the extreme position that jaw retreats, the locking flexible member is installed on the key and drives flexible member, be installed with control loop in the cover of back, control loop has several cam curved surfaces that drives key and be made of several lug bosses and inner concave, and the protheca inwall has positioning key and is connected pawl.The protheca outer surface constitutes the surface that is easy to grip by projection and groove.
The utility model is owing to adopt said structure, and drill chuck links to each other with power equipment by the internal thread or the internal taper hole of rearward end during use, when power equipment rotates, rotating torque is delivered on the drill body.During work, earlier pad is inserted between the three-jaw of drill chuck front end centre bore, cover before and after relatively rotating, the driving key of control loop is much smaller than the driver slot of nut sleeve, when the driving key does not contact the stressed wall of nut sleeve driver slot clamping direction, the lug boss of control loop promotes the driving flexible member of nut sleeve rearward end earlier, and nut sleeve is driven flexible member together with screw and drives and rotate around drill body.Screw constitutes the screw thread transmission by the screw thread of internal thread and jaw, drives jaw and move forward and clamp pad in three inclined holes of drill body.Owing to three jaws are clamped pad the resistance of screw and the transmission of jaw screw thread are increased suddenly, at this moment strengthening strength again relatively rotates when afterwards overlapping, the locking flexible member of the lug boss compressing nut sleeve rearward end of control loop, make locking ratchet and ratchet engaged, continue to relatively rotate the back cover, the locking elastic claw is beated on the ratchet gear teeth and can be sent " clatter " " clatter " sound and play the heterodromous locking effect that stops, and contacts also clamping tool handle with the nut sleeve driver slot at the stressed wall of clamping direction until the driving key of control loop.At this moment, disk spring has also produced maximum distortion and has touched the force-bearing table of drill body, and the elastic force of disk spring can prevent because of vibration, impact and to make jaw skid or get loose clamping force fluctuation excessive appearance of pad.
During the back off tool handle, only need oppositely to rotate the back cover relative to protheca, because the engagement locking effect of locking elastic claw and ratchet, relative motionless between nut sleeve and the drill body, the back cover drives relative protheca of control loop and nut sleeve counter motion earlier, driving keyed jointing up to control loop contacts the stressed wall that the nut sleeve driver slot unclamps direction, and the lug boss of control loop has also been removed the compressing to the locking flexible member, and locking ratchet resets under the elastic restoring force effect and throws off engagement with ratchet.Firmly relatively rotate back cover again, the driving key of control loop drives the relative drill body with screw of nut sleeve and jaw relatively rotates, and jaw retreats and unclamps the pad of clamping.
Against existing technologies, rational in infrastructure, the working stability of the utility model, easy to use, self-locking property is reliable.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 is the A of Fig. 1---the A cutaway view.
Fig. 3 is the partition structural representation of Fig. 1.
Fig. 4 is the utility model control loop structural representation.
Fig. 5 is that two flexible members of the utility model and nut sleeve are the structural representation of one.
Fig. 6 is the back cover front view that the utility model is installed control loop.
Fig. 7 be Fig. 6 along A---A is to cutaway view.
The specific embodiment
In the following description, the element of identical function or structure all indicates with identical label.
Can see that from Fig. 1, Fig. 2 and Fig. 3 the utility model comprises drill body 1, nut sleeve 2, screw 3, jaw 4, ratchet 5, back cover 6, rolling element 7, disk spring 12, positioning sleeve 8, protheca 9, locking flexible member 10 and drives flexible member 11.Three jaws 4 are installed in the inclined hole 1-7 of three five equilibriums of drill body 1 respectively, the screw thread formation screw thread transmission of the internal thread of screw 3 and three jaws 4.
The positioning key 9-1 of the utility model by protheca 9 inside be connected pawl 9-2 and cooperate to be mutually permanently connected with annular link slot 1-3 with the keyway 1-2 of drill body 1 front portion and be in the same place, the protheca outer surface is formed by fin and groove.Nut sleeve 2 is fixedlyed connected with screw 3, ladder platform 1-1 place between rolling element 7 and drill body force-bearing table 1-4 is equipped with disk spring 12, one little gap is arranged between disk spring 12 and the force-bearing table 1-4, and the size in this gap designs by the deflection that disk spring is subjected to producing near maximum working pressure (MWP).Minimum clearance when not stressing between said disk spring of the utility model and the drill body force-bearing table, the axial compressive force that is produced by this self-locking clamping chuck of drill bit design maximum clamping force 50-95% and axial deflection that this disk spring is produced is determined.Nut sleeve 2 rearward end have several driver slots 2-3, key 2-1 and key 2-2.Locking flexible member 10 is installed on the key 2-1, is equipped with on the key 2-2 and drives flexible member 11.There is locking ratchet 10-1 locking flexible member 10 ends, and there is bent pawl 11-1 the end that drives flexible member 11.Ratchet 5 is fixedly connected on the 1-5 place, rear portion of drill body 1, and ratchet surface has ratchet 5-1.Positioning sleeve 8 is fixedlyed connected with 1-6 place, drill body 1 rear portion.Back cover 6 can relatively rotate with positioning sleeve 8.The inside of back cover 6 has several to drive key 6-1, is arranged in driver slot 2-3 during assembling.The back inner surface of back cover 6 is designed to cam curved surface, and by lug boss 6-2, a plurality of concave shaped tooth 6-3 and fillet surface form.The outer surface of back cover 6 is formed the surface configuration that is easy to grip and can transmits big rotating torque by fin and groove.
The course of work of the present utility model is such: as shown in Figure 1, the screw rod of the power transmission shaft of the screwed hole at drill body rear portion and power equipment is connected and fixed, pad 66 is put between three jaws 4 of drill body 1, relatively rotates protheca 9 and back cover 6.Because the bent pawl 11-1 engagement of the concave shaped tooth 6-3 of back cover cam ring curved surface and the driving flexible member on the nut sleeve 2, drive flexible member 11 and nut sleeve 2 by 6 promotions of back cover and rotate relative to drill body 1 and jaw 4 and make.The screw thread of the screw 3 that is connected with nut sleeve 2 and the screw thread of jaw 4 form the screw thread transmission, and screw 3 is converted into moving forward of relative drill body 1 among the inclined hole 1-7 of jaw 4 at drill body 1 relative to drill body 1 and rotating of jaw 4, touch pad 66 until three-jaw 4.When continuing to relatively rotate protheca 9 and afterwards overlapping 6, because three-jaw 4 contacts also clamping tool handle 66 gradually, the resistance that produces also increases gradually, cause the bent pawl 11-1 spring and send " clatter " " clatter " sound between the indent tooth 6-3 of back cover that drives flexible member, touch the stressed wall 2-4 of clamping direction of nut sleeve driver slot 2-3 until the driving key 6-1 of back cover.At this moment, the lug boss 6-2 of back cover cam ring curved surface has been pressed on the locking flexible member 10, and force locking ratchet 10-1 crooked with ratchet gear teeth 5-1 engagement, at this moment also stress deformation of disk spring.Continue firmly to relatively rotate protheca 9 and back cover 6, back cover 9 relative ratchets 5 relatively rotate and make relative spring between locking ratchet 10-1 and ratchet gear teeth 5-1, and send the sound of " click " " click ", until complete clamping tool handle 66.Then complete obiteration of gap between disk spring 12 and the drill body force-bearing table 1-4, rolling element 7 suffered axial compressive forces directly pass to force-bearing table 1-4 by disk spring.Disk spring 12 distortion have produced big elastic force, thereby can prevent that the clamping force fluctuation of 4 pairs of pads 66 of jaw under vibration and impact duty is excessive, and cause pad to get loose.When unclamping, oppositely relatively rotate protheca 9 and back cover 6, because lug boss 6-2 compressing locking flexible member 10, make locking ratchet 10-1 and ratchet gear teeth 5-1 engagement, stoped screw 3 to rotate with respect to ratchet 5 and jaw 4, therefore, the first relative motion of the bent pawl 11-1 of the indent tooth 6-3 of back cover and driving flexible member, and send " clatter " " clatter " sound, lug boss 6-2 moves to and locks flexible member 10 and disengages, locking ratchet 10-1 throws off engagement by elasticity and ratchet gear teeth 5-1, and then Tao driving key 6-1 also moves to the stressed wall 2-5 of direction that unclamps of nut sleeve driver slot 2-3 and contacts.Be rotated further the back cover, drive key 6-1 promotion nut sleeve 2 and rotate relative to jaw 4, and back off tool handle 66.
Locking flexible member 10 among Fig. 1, Fig. 2 and Fig. 3, driving flexible member 11 and nut sleeve 2 can replace with the composite screw nut cover of as shown in Figure 5 nut sleeve 2, locking flexible member 10 and driving flexible member 11 being made one, and promptly said locking flexible member is an one with driving flexible member and nut sleeve rearward end.Back cover 6 among Fig. 1, Fig. 2 and Fig. 3 can be assembled together with control loop shown in Figure 4 13 and Fig. 6 and back cover 14 shown in Figure 7 and replace, and promptly said control loop 13 is one with back cover 14.The key 13-1 of control loop and 13-2 match with the keyway 14-1 and the 14-2 of back cover 14 respectively during assembling.
Claims (4)
1, a kind of self-locking clamping chuck of drill bit, comprise drill body, screw, jaw, protheca, the back cover, nut sleeve, rolling element, three jaws are installed in respectively in three five equilibrium inclined holes, the screw screw thread forms the screw thread transmission with the jaw screw thread that is installed in the jaw in the drill body inclined hole, protheca is fixedlyed connected with drill body, it is characterized in that: the drill body rear portion fixedly mounts a ratchet, between rolling element and the drill body force-bearing table disk spring is installed, the drill body front end has keyway and annular link slot, nut sleeve extands rearward to driver slot and several keys on the rear end face that comprises the extreme position that jaw retreats, the locking flexible member is installed on the key and drives flexible member, be installed with control loop in the cover of back, control loop has several cam curved surfaces that drives key and be made of several lug bosses and inner concave, and the protheca inwall has positioning key and is connected pawl.
2, self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that said locking flexible member and driving flexible member and nut sleeve rearward end are one.
3, self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that said control loop and back cover are one.
4, self-locking clamping chuck of drill bit as claimed in claim 1, it is characterized in that the minimum clearance between said disk spring and the drill body force-bearing table, the axial compressive force that is produced by this self-locking clamping chuck of drill bit design maximum clamping force 50-95% and axial deflection that this disk spring is produced is determined.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02255628U CN2582790Y (en) | 2002-11-25 | 2002-11-25 | Self-locking drill chuck |
| US10/650,914 US7125021B2 (en) | 2002-11-25 | 2003-08-29 | Self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02255628U CN2582790Y (en) | 2002-11-25 | 2002-11-25 | Self-locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2582790Y true CN2582790Y (en) | 2003-10-29 |
Family
ID=33724079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02255628U Expired - Lifetime CN2582790Y (en) | 2002-11-25 | 2002-11-25 | Self-locking drill chuck |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US7125021B2 (en) |
| CN (1) | CN2582790Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119685A1 (en) * | 2005-05-13 | 2006-11-16 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking type manually tightened drill chuck |
| WO2007028287A1 (en) * | 2005-09-09 | 2007-03-15 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking drill chuck |
| WO2007036082A1 (en) * | 2005-09-30 | 2007-04-05 | Zhou, Wenhua | A self-locking type manually tightened drill chuck |
| CN1313233C (en) * | 2005-10-09 | 2007-05-02 | 浙江大学 | Force boosting type locking drill chuck |
| WO2007118349A1 (en) * | 2006-04-14 | 2007-10-25 | Zhenqian Hu | Manually fastened drill chuck |
| CN100406173C (en) * | 2005-05-29 | 2008-07-30 | 山东威达机械股份有限公司 | Clamping structure of handle kind tool |
| CN101049640B (en) * | 2006-03-25 | 2010-12-08 | 罗姆股份有限公司 | Rescrewing chuck |
| CN1907610B (en) * | 2005-06-09 | 2011-04-06 | 动力工具霍尔德斯股份有限公司 | Drill chuck |
| WO2017024544A1 (en) * | 2015-08-12 | 2017-02-16 | Apex Brands, Inc. | Locking chuck |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388994C (en) * | 2002-09-20 | 2008-05-21 | 山东威达机械股份有限公司 | Power clamped champing chuck for drill |
| CN2633481Y (en) * | 2003-07-17 | 2004-08-18 | 山东威达机械股份有限公司 | Fastening type drill clamp |
| JP4616576B2 (en) * | 2004-04-20 | 2011-01-19 | ユキワ精工株式会社 | Chuck device |
| US7451990B2 (en) * | 2004-04-29 | 2008-11-18 | Jacobs Chuck Manufacturing Company | Chuck with torque indicator |
| FR2883208B1 (en) * | 2005-03-16 | 2007-05-11 | Amyot Sa Sa Ets | TOOL HOLDER CHUCK FOR ROTATING MACHINE HAVING LOCKING MEANS |
| US7837200B2 (en) | 2005-07-01 | 2010-11-23 | Jacobs Chuck Manufacturing Company | Chuck |
| CN100484674C (en) * | 2005-07-14 | 2009-05-06 | 山东威达机械股份有限公司 | Locking type clamping head of drill |
| US7527273B2 (en) * | 2005-09-02 | 2009-05-05 | Jacobs Chuck Manufacturing Company | Locking chuck |
| CN100578036C (en) * | 2005-09-28 | 2010-01-06 | 山东威达机械股份有限公司 | One-way clutch and clamping structure of handle tool therewith |
| US10556276B2 (en) * | 2013-03-14 | 2020-02-11 | Apex Brands, Inc. | Locking chuck |
| JP6787571B2 (en) | 2016-12-06 | 2020-11-18 | ユキワ精工株式会社 | Chuck device |
| CN107755723B (en) * | 2017-11-07 | 2019-05-03 | 金华职业技术学院 | A kind of strength collet |
| WO2022172911A1 (en) * | 2021-02-09 | 2022-08-18 | 株式会社 ムラテクノロジー | Chuck device and electric tool |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5741016A (en) * | 1996-10-02 | 1998-04-21 | Power Tool Holders Incorporated | Chuck |
| EP1170079B2 (en) * | 2000-07-03 | 2010-10-06 | Röhm GmbH | Drill chuck |
| US6517088B1 (en) * | 2000-08-08 | 2003-02-11 | Rohm Gmbh | Lockable drill chuck |
| DE10137281A1 (en) * | 2000-08-10 | 2002-02-21 | Roehm Gmbh | Drill chuck for drilling holes has spring ring at angle to threaded ring |
| DE20106463U1 (en) * | 2001-04-12 | 2001-06-13 | Fan Chiang Wie Chuan | Chuck |
| CN1217762C (en) * | 2001-06-10 | 2005-09-07 | 山东威达机械股份有限公司 | Self-locking clamping chuck of drill bit |
| JP2003071618A (en) * | 2001-08-30 | 2003-03-12 | Yukiwa Seiko Inc | Chuck device |
| DE10226429A1 (en) * | 2002-06-13 | 2003-12-24 | Roehm Gmbh | chuck |
-
2002
- 2002-11-25 CN CN02255628U patent/CN2582790Y/en not_active Expired - Lifetime
-
2003
- 2003-08-29 US US10/650,914 patent/US7125021B2/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119685A1 (en) * | 2005-05-13 | 2006-11-16 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking type manually tightened drill chuck |
| CN100406173C (en) * | 2005-05-29 | 2008-07-30 | 山东威达机械股份有限公司 | Clamping structure of handle kind tool |
| US7581907B2 (en) | 2005-05-29 | 2009-09-01 | Shandong Weida Machinery Co., Ltd. | Clamping structure for a handled tool |
| CN1907610B (en) * | 2005-06-09 | 2011-04-06 | 动力工具霍尔德斯股份有限公司 | Drill chuck |
| WO2007028287A1 (en) * | 2005-09-09 | 2007-03-15 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking drill chuck |
| WO2007036082A1 (en) * | 2005-09-30 | 2007-04-05 | Zhou, Wenhua | A self-locking type manually tightened drill chuck |
| CN1313233C (en) * | 2005-10-09 | 2007-05-02 | 浙江大学 | Force boosting type locking drill chuck |
| CN101049640B (en) * | 2006-03-25 | 2010-12-08 | 罗姆股份有限公司 | Rescrewing chuck |
| WO2007118349A1 (en) * | 2006-04-14 | 2007-10-25 | Zhenqian Hu | Manually fastened drill chuck |
| US8141883B2 (en) | 2006-04-14 | 2012-03-27 | Zhenqian Hu | Self-locking mechanism of manually tightened drill chuck |
| WO2017024544A1 (en) * | 2015-08-12 | 2017-02-16 | Apex Brands, Inc. | Locking chuck |
| US10239127B2 (en) | 2015-08-12 | 2019-03-26 | Jacobs Chuck Manufacturing (Suzhou) Company, Ltd. | Locking chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| US7125021B2 (en) | 2006-10-24 |
| US20050258605A1 (en) | 2005-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121125 Granted publication date: 20031029 |